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<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1135812
-->
<head>
  <title>Test for Bug 1135812</title>
  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>        
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1135812">Mozilla Bug 1135812</a>
<p id="display"></p>
<div id="content" style="display: none">
  
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<pre id="test">

<iframe style="width: 50px;"
        srcdoc='<picture><source srcset="data:,a" media="(min-width: 150px)" /><source srcset="data:,b" media="(min-width: 100px)" /><img src="data:,c" /></picture>'></iframe>
<script>
    SimpleTest.waitForExplicitFinish();
    addEventListener('load', function() {
        var iframe = document.querySelector('iframe');
        var img = iframe.contentDocument.querySelector('img');
        is(img.currentSrc, 'data:,c');

        img.onload = function() {
            is(img.currentSrc, 'data:,a');
            img.onload = function() {
                is(img.currentSrc, 'data:,b');
                SimpleTest.finish();
            }
            img.onerror = img.onload;
            iframe.style.width = '120px';
        };
        img.onerror = img.onload;

        iframe.style.width = '200px';
    }, true);
</script>
</pre>
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